A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
NSN 7035-00-535-8109
NSN 5975-00-372-4767
NSN 5925-00-279-1353
NSN 5925-00-332-0018
NSN 6110-00-915-5229
NSN 5960-00-181-0640
NSN 5960-01-224-0414
NSN 5950-00-422-0449
NSN 6130-01-020-9004
NSN 2925-00-524-4688
NSN 6685-01-604-8063
NSN 6105-00-165-1619